#include <stdio.h>
int main()
{
    printf("%zu\n",sizeof(char*)); //8字节
    printf("%zu\n",sizeof(short*)); //8字节
    printf("%zu\n",sizeof(int*)); //8字节
    printf("%zu\n",sizeof(float*)); //8字节
    printf("%zu\n",sizeof(double*)); //8字节
    return 0;
}